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1 SAFETY WARNINGS
SAFETY WARNINGSSAFETY WARNINGS
SAFETY WARNINGS
All information hereafter detailed applies for the L-ACOUSTICS® 12XTi Coaxial Enclosure, designated in this
section as ‘‘the product’’.
1.1 Symbol description
Throughout this manual the potential risks are indicated by the following symbols:
The WARNING symbol indicates a potential risk of physical harm to the user or people within close
proximity to the product.
In addition, the product may also be damaged.
The CAUTION symbol notifies the user about information to prevent possible product damage.
The IMPORTANT symbol is a notification of an important recommendation of use.
1.2 Important safety instructions
1. Read this manual
2. Heed all safety warnings
3. Follow all instructions
4. The user should never incorporate equipment or accessories not approved by L-ACOUSTICS®
5. Sound Levels
Sound systems are capable of producing high Sound Pressure Levels which can be dangerous and
potentially cause hearing damage especially when exposed to them over a long period of time.
Do not stay within close proximity of the loudspeakers when operating.
6. Heat
Do not operate the product near any heat source, such as radiators or other devices.
!
WARNING
!
IMPORTANT
!
CAUTION
!
WARNING
!
CAUTION
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7. Water and moisture
Even if the product is weather-resistant, it can not be exposed to moisture (rain, sea spray, shower,
steam) for a long period of time, nor put in direct contact or partially immersed in water. This would
cause irreversible damage to exposed components.
8. System Parts and Rigging inspection
All system components must be inspected before use, in order to detect any possible defects.
Please refer to the “Care and Maintenance” section of this manual as well as any other manuals
pertaining to the system for a detailed description of the inspection procedure.
Any part showing any sign of defect must immediately be put aside and withdrawn from use to be
inspected by qualified service personnel.
9. Mounting instructions
Do not place the product on an unstable cart, stand, tripod, bracket, or table. The product may fall
and be seriously damaged, and may cause serious human injury.
Any mounting of the product should follow the manufacturer’s instructions given in this manual,
and should use a mounting accessory recommended by the manufacturer.
10. Conditions which require immediate service
Servicing is required when the product has been damaged in any way such as:
•
••
• The product has been exposed to rain or moisture,
• The product was dropped or the enclosure is damaged,
• The product does not operate normally.
11. Manual
Keep this manual in a safe place during the product lifetime. This manual forms an integral part of the
product. Reselling of the product is only possible if the user manual is available. Any changes made to
the product have to be documented in writing and passed on to the buyer in the event of resale.
!
IMPORTANT
!
WARNING
!
WARNING
!
CA
UTION
!
CAUTION
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1.3 EC declaration of conformity
L-ACOUSTICS®
13 rue Levacher Cintrat
Parc de la Fontaine de Jouvence
91462 Marcoussis Cedex
France
States that the following product:
Loudspeaker enclosure, 12XTi
Is in conformity with the provisions of:
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC
Applied rules and standards:
EN ISO 12100-1: 2004 (Mechanical Safety)
EN60065 (Electrical Safety)
Established at Marcoussis, France
November 10th, 2009
Christophe Pignon
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2 CON
CONCON
CONTENTS
TENTSTENTS
TENTS
1
SAFETY WARNINGS 1
1.1
Symbol description ............................................................................................................................................1
1.2
Important safety instructions..............................................................................................................................1
1.3
EC declaration of conformity .............................................................................................................................3
2
CONTENTS 4
3
INTRODUCTION 5
3.1
Welcome to L-ACOUSTICS®............................................................................................................................5
3.2
Unpacking .........................................................................................................................................................5
4
XTi ARCHITECTURAL SERIES 6
5
12XTi COAXIAL ENCLOSURE 8
6
INSTALLATION 9
6.1
Flying or stacking the 12XTi...............................................................................................................................9
6.2
Connecting speakers .........................................................................................................................................9
7
OPERATION 11
7.1
System configuration........................................................................................................................................11
7.2
“FULL RANGE” mode.....................................................................................................................................11
7.2.1
Description.......................................................................................................................................11
7.2.2
Connecting the 12XTi to the LA4.....................................................................................................11
7.2.3
[12XTP_FR], [12XTP_FI], and [12XTP_MO] presets........................................................................12
7.3
“HIGH-PASS” mode........................................................................................................................................12
7.3.1
Description.......................................................................................................................................12
7.3.2
Connecting the 12XTi to the LA4.....................................................................................................12
7.3.3
[12XTP_FR_100], [12XTP_FI_100], and [12XTP_MO_100] presets.................................................13
7.4
“HYBRID’’ mode.............................................................................................................................................13
7.4.1
Description.......................................................................................................................................13
7.4.2
Connecting the 12XTi and SB118 to the LA4....................................................................................13
7.4.3
[12XTP_SB118] preset.....................................................................................................................14
8
CARE AND MAINTENANCE 15
8.1
Maintenance information .................................................................................................................................15
8.2
Testing procedure...........................................................................................................................................15
8.2.1
Check of transducer and enclosure acoustic behavior........................................................................15
8.2.2
Check of mechanical assembly and rigging parts................................................................................15
8.2.3
Check of external aspect ..................................................................................................................15
8.3
Transducer service..........................................................................................................................................16
8.3.1
LF loudspeaker.................................................................................................................................16
8.3.2
HF diaphragm...................................................................................................................................16
8.4
Spare parts and recommended tools................................................................................................................17
9
SPECIFICATIONS 18
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3 INTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION
3.1 Welcome to L-ACOUSTICS®
Thank you for purchasing the L-ACOUSTICS® 12XTi Coaxial Enclosure.
This manual contains essential information on installing and operating the product correctly and safely. It is necessary to
read this manual carefully in order to become familiar with these procedures.
As part of a continuous evolution of techniques and standards, L-ACOUSTICS® reserves the right to
change the specifications of the product and the content of this manual without prior notice. Please check
the L-ACOUSTICS® web site at www.l-acoustics.com on a regular basis for latest updates.
Should the product requires repair or if information about the warranty is needed, please contact an approved
L-ACOUSTICS® distributor. The address of the nearest distributor is available on the L-ACOUSTICS® web site.
3.2 Unpacking
Carefully open the shipping carton and check the product for any noticeable damage. Each L-ACOUSTICS® product is
tested and inspected before leaving the factory and should arrive in perfect condition.
If found to be damaged, notify the shipping company or the distributor immediately. Only the consignee may initiate a
claim with the carrier for damage incurred during shipping. Be sure to save the carton and packing materials for the
carrier's inspection.
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ARCHITECTURAL SERIES
ARCHITECTURAL SERIESARCHITECTURAL SERIES
ARCHITECTURAL SERIES
The L-ACOUSTICS® 12XTi enclosure is the mid-sized model within the XTi Architectural Series and operates
over the 55 Hz to 20 kHz frequency bandwidth. This response can be extended down to 32 Hz with the addition of the
L-ACOUSTICS® SB118 subwoofer.
The system approach developed by L-ACOUSTICS® for the XTi series consists of the elements needed to fully take
advantage of the possible configurations and optimize the system. The main components of the system are (see also
Figure 1):
8XTi * Passive compact coaxial enclosure
12XTi * Passive multipurpose coaxial enclosure
ETR8XTi * Mounting accessory for the 8XTi enclosure
ETR12XTi * Mounting accessory for the 12XTi enclosure
EMBi * Pole mount socket for the 8XTi and 12XTi enclosures
SB118 Subwoofer enclosure
LA4 Amplified controller
LA NETWORK MANAGER Remote control software
SOUNDVISION Acoustical and mechanical modeling software
* Available in two standard colors: Grey Brown RAL 8019
®
or Pure White RAL 9010
®
(refer to the 8XTi and 12XTi spec sheets).
The XTi series components are compatible with standard L-ACOUSTICS® accessories. These accessories include the
L-ACOUSTICS® SP.7, SP10, and SP25 loudspeaker cables with respective lengths of 0.7 m/2 ft,
10 m/30 ft, and 25 m/80 ft. These cables allow connection of the 8XTi and 12XTi enclosures to the LA4 amplified
controller. Each cable is a 4-conductor cable with 4 mm2 conductor cross-section (13 SWG, 11 AWG) and features
4-point Speakon® connectors.
The 8XTi and 12XTi are driven and powered by the L-ACOUSTICS® LA4 amplified controller. These controllers
ensure intelligent protection, filtering, and equalization of the enclosures. Four channels of amplification are provided
along with the OEM factory preset libraries, ensuring the optimization and performance of the systems within the limits
of the recommended configurations.
Each system design configuration should first be modeled and studied using the L-ACOUSTICS® SOUNDVISION
software. The software predictions are based on the preset parameters stored in the amplified controllers.
Up to 253 amplified controllers can be interconnected and monitored through the proprietary L-ACOUSTICS®
L-NET network using the L-ACOUSTICS® LA NETWORK MANAGER software.
Detailed description on using the LA4 amplified controller, SOUNDVISION and LA NETWORK MANAGER softwares
is beyond the scope of this manual. Please, refer to the appropriate documentation available on the
L-ACOUSTICS® web site at www.l-acoustics.com.
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The L-ACOUSTICS® 12XTi enclosure contains a 3’’ diaphragm compression driver coaxially loaded (for HF
directivity control) by an 12’’ low frequency transducer mounted in a bass-reflex tuned enclosure. The internal passive
crossover network uses proprietary third order filters. The linearization and protection of the transducers is defined by
the drive parameters contained in the LA4 amplified controller. The nominal impedance of the 12XTi enclosure is
8 ohms.
The coaxial transducer arrangement produces a 90° axi-symmetric directivity output along with a smooth tonal
response free of secondary lobes over the entire frequency range.
The wedge-shaped cabinet design makes the 12XTi perfectly suited to all stacked sound reinforcement applications.
The cabinet can also be pole, wall, or ceiling-mounted.
The 12XTi cabinet is made of high grade Baltic birch plywood with remarkable mechanical and acoustical properties for
improved long term durability.
Figure 2: The 12XTi enclosure
4 inserts with screws
(OMNIMOUNT
®
)
Grill
Wedge
-
shaped
cabinetry
Safety insert
Connector plate
2
inserts with screws
(ETR12XTi or EMBi)
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6 INSTALLATION
INSTALLATIONINSTALLATION
INSTALLATION
6.1 Flying or stacking the 12XTi
The inserts and the wedge-shaped cabinet design of the 12XTi enclosure (Figure 2) allow various setups such as:
•
••
• Wall or ceiling-mounting using the L-ACOUSTICS® ETR12XTi mounting accessory.
•
••
• Wall or ceiling-mounting using the OMNIMOUNT® 120.0 SERIES mounting accessories.
•
••
• Pole mounting using the L-ACOUSTICS® EMBi 35 mm/1.4 inch socket.
•
••
• Stacking with two fixed angle settings of 30° and 60° with regard to the vertical.
Refer to the “XTi’’ rigging procedures manual before installing an enclosure.
6.2 Connecting speakers
The 12XTi enclosure is driven and powered by the dedicated L-ACOUSTICS® LA4 amplified controller. Each LA4
amp channel can drive one 12XTi enclosure. For more details, please, refer to the “LA4’’ user manual also available
on the L-ACOUSTICS® web site at www.l-acoustics.com.
The 12XTi enclosure is equipped with 4-point Speakon® connectors allowing connection with the LA4 amplified
controller using one of the L-ACOUSTICS® SP.7, SP10, or SP25 cables (see Figure 1 and Figure 3).
A maximum of one 12XTi enclosure can be connected per LA4 output channel.
The L-ACOUSTICS® wiring convention is as follows:
Speakon® connector labels Connection to transducers
1+ IN +
1- IN -
2+ Not used
2- Not used
!
CAUTION
!
WARNING
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Figure 3: Connecting one 12XTi to the LA4 amp channel #1
To ensure both high performance and safety, L-ACOUSTICS® recommends the exclusive use of
high-quality, fully insulated speaker cables made of stranded copper wire.
In order to preserve a high damping factor it is desirable to keep loudspeaker cables as short as
possible and with a gauge offering low resistance per unit length.
The following table provides information regarding the recommended length versus wire cross-section.
Table 1: Maximum cable length versus conductor cross-section for Damping Factor > 20
Cross-section Maximum length for one 12XTi (8 Ω load)
mm2 SWG AWG m ft
2.5 15 13 30 100
4 13 11 50 160
6 11 9 74 240
10 9 7 120 390
According to the calculation in Table 1, one SP25 cable (4 mm², 25 m) can be used to power one 12XTi (8 Ω load) with
a damping factor still greater than 20.
SP.7, SP10, o
r
SP25
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IMPORTANT
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7 OPERATION
OPERATIONOPERATION
OPERATION
7.1 System configuration
The choice of a system configuration should be the result of an electro-acoustic study conducted by an expert (System
Engineer or Audio Consultant). However, this will not be discussed here as sound-design aspects are beyond the scope
of this manual. This study can rely on the simulations modeled in SOUNDVISION software, yielding electro-acoustic
predictions which take into account the enclosures’ manufacturer data and particular situational usage, as well as the
projected environment.
Three operation modes (“FULL RANGE”, “HIGH-PASS”, and “HYBRID”), each one associated with a set of factory
presets, will allow building all the common configurations (C, LR, LCR, distributed…).
The 12XTi enclosures can be used as a standalone system in the “FULL RANGE’’ mode or in combination with
subwoofers in the “HIGH-PASS’’ and “HYBRID’’ modes.
For each mode a distinction is drawn between ‘‘FRONT’’, ‘‘FILL’’, and ‘‘MONITOR’’ presets as they respectively
match front-of-house, distributed, and half-space loading applications.
• The LA4 output channel assignment varies with the preset selected by the user.
• ALWAYS check that the 12XTi enclosures are connected to correct LA4 output channels before
operating.
Note: The latest version of the preset library can be supplied by an L-ACOUSTICS® authorized representative and is
also downloadable from the L-ACOUSTICS® web site at www.l-acoustics.com.
7.2 “FULL RANGE” mode
7.2.1 Description
In ‘‘FULL RANGE’’ mode the 12XTi enclosures are used in standalone configurations within their nominal bandwidth
(55 Hz – 20 kHz) for applications not requiring low frequency extension.
7.2.2 Connecting the 12XTi to the LA4
Each 12XTi enclosure must be connected to an LA4 output channel ranging from channel 1 through 4. Therefore, a
single LA4 amplified controller can drive up to four 12XTi enclosures (see Figure 4).
Note: The system resources are optimized for four 12XTi per LA4.
Figure 4: Four 12XTi enclosures connected to an LA4 controller
IN A
IN B
OUT 2 (IN A)
OUT 1
(IN A)
OUT 3 (IN B)
O
UT 4
(IN B)
!
IMPORTANT
This
picture
is a
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does not represent
a valid configuration.
!
CAUTION
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7.2.3 [12XTP_FR], [12XTP_FI], and [12XTP_MO] presets
• ALWAYS use the [12XTP_] PASSIVE presets with the 12XTi enclosure.
• NEVER mistake the [12XTP_] PASSIVE presets for the [12XTA_] ACTIVE presets.
The [12XTP_FR] ‘‘FRONT’’ preset features LF and HF shelving EQ for standalone FOH applications without
subwoofers.
The [12XTP_FI] ‘‘FILL’’ preset results in a ‘‘flat’’ contour in free field conditions for use in speech reinforcement, classical
music, or close proximity fill applications.
The [12XTP_MO] ‘‘MONITOR’’ preset results in a ‘‘flat’’ contour in half-space loading conditions for floor monitoring,
wall, or ceiling-mounted applications.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the desired preset.
Refer to the ‘‘LA4’’ user manual for additional instructions. The presets are also selectable using the LA NETWORK
MANAGER software (refer to the ‘‘LA NETWORK MANAGER’’ user manual). The accessible parameters in ‘‘FULL
RANGE’’ mode are shown in the following chart:
Table 2: Accessible parameters in ‘‘FULL RANGE’’ mode
Accessible (O) and blocked (X) parameters
LA4 Inputs/Outputs
Elements to connect Preset
assignments* Mute Gain Delay Polarity
IN A Input signal A IN_A X O O O
IN B Input signal B IN_B X O
O
O
OUT 1 12XTi enclosure PA_A O
O
O
O
OUT 2 12XTi enclosure
PA_A O
O
O
O
OUT 3 12XTi enclosure
PA_B O
O
O
O
OUT 4 12XTi enclosure
PA_B O
O
O
O
* IN: input signal. A, B: channel A, B. PA: passive enclosure.
7.3 “HIGH-PASS” mode
7.3.1 Description
In ‘‘HIGH-PASS’’ mode the 12XTi enclosures are 100 Hz high-pass filtered to allow using them along with the
dedicated complimentary SB118 subwoofers. The bandwidth of the system is extended down to 32 Hz. The
recommended ratio is one 12XTi for one SB118.
7.3.2 Connecting the 12XTi to the LA4
Each 12XTi enclosure must be connected to an LA4 output channel ranging from channel 1 through 4. Therefore a
single LA4 amplified controller can drive up to four 12XTi enclosures (see Figure 5).
Note: The system resources are optimized for four 12XTi per LA4.
Figure 5: Four 12XTi enclosures connected to an LA4 controller
IN A
IN B
OUT 2 (IN A)
OUT 1
(IN A)
OUT 3 (IN B)
OUT 4
(IN B)
!
IMPORTANT
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CAUTION
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7.3.3 [12XTP_FR_100], [12XTP_FI_100], and [12XTP_MO_100] presets
• ALWAYS use the [12XTP_] PASSIVE presets with the 12XTi enclosure.
• NEVER mistake the [12XTP_] PASSIVE presets for the [12XTA_] ACTIVE presets.
The [12XTP_FR_100] ‘‘FRONT’’ preset features a HF shelving EQ and a 100 Hz high-pass filter for FOH applications
with subwoofers.
The [12XTP_FI_100] ‘‘FILL’’ preset results in a ‘‘flat’’ contour down to 100 Hz in free field conditions for use in speech
reinforcement, classical music, or close proximity fill applications.
The [12XTP_MO_100] ‘‘MONITOR’’ preset results in a ‘‘flat’’ contour down to 100 Hz in half-space loading conditions
for floor monitoring, wall, or ceiling-mounted applications.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the desired preset.
Refer to the ‘‘LA4’’ user manual for additional instructions. The presets are also selectable using the LA NETWORK
MANAGER software (refer to the ‘‘LA NETWORK MANAGER’’ user manual). The accessible parameters in
‘‘HIGH-PASS’’ mode are shown in the following chart:
Table 3: Accessible parameters in ‘‘HIGH-PASS’’ mode
Accessible (O) and blocked (X) parameters
LA4 Inputs/Outputs
Elements to connect Preset
assignments* Mute Gain Delay Polarity
IN A Input signal A IN_A X O O O
IN B Input signal B IN_B X O
O
O
OUT 1 12XTi enclosure PA_A O
O
O
O
OUT 2 12XTi enclosure
PA_A O
O
O
O
OUT 3 12XTi enclosure
PA_B O
O
O
O
OUT 4 12XTi enclosure
PA_B O
O
O
O
* IN: input signal. A, B: channel A, B. PA: passive enclosure.
Note: The complimentary SB118 subwoofers must be connected to additional LA4 or LA8 amplified controllers. Please
refer to the ‘‘SB118’’ user manual.
7.4 “HYBRID’’ mode
7.4.1 Description
In ‘‘HYBRID’’ mode the 12XTi and SB118 enclosures are connected to the same LA4 amplified controller thus limiting
the number of required units. The bandwidth of the system is extended down to 32 Hz. The recommended ratio is one
12XTi for one SB118.
7.4.2 Connecting the 12XTi and SB118 to the LA4
The 12XTi and SB118 enclosures connect to the LA4 outputs as follows: channels 1 and 3 are dedicated to one SB118
enclosure each, and channels 2 and 4 to 12XTi enclosures. Therefore, a single LA4 amplified controller can drive up to
two 12XTi and two SB118 enclosures (see Figure 6).
A maximum of one SB118 enclosure can be connected per LA4 output channel 1 or 3.
Note: The system resources are optimized for two 12XTi and two SB118 per LA4.
!
CAUTION
!
CAUTION
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Figure 6: Two 12XTi and two SB118 enclosures connected to an LA4 controller
7.4.3 [12XTP_SB118] preset
The [12XTP_SB118] preset features a HF shelving EQ for FOH applications. The crossover frequency between the LF
and HF sections is set at 100 Hz.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the [12XTP_SB118]
preset. Refer to the ‘‘LA4’’ user manual for additional instructions. The preset is also selectable using the
LA NETWORK MANAGER software (refer to ‘‘LA NETWORK MANAGER’’ user manual). The accessible
parameters in ‘‘HYBRID’’ mode are shown in the following chart:
Table 4: Accessible parameters in ‘‘HYBRID’’ mode
Accessible (O) and blocked (X) parameters
LA4 Inputs/Outputs
Elements to connect Preset
assignments* Mute Gain Delay Polarity
IN A Input signal A IN_A X O
O
O
IN B Input signal B IN_B X O
O
O
OUT 1 SB118 enclosure SB_A O
O
O
O
OUT 2 12XTi enclosure
PA_A O
O
O
X
OUT 3 SB118 enclosure
SB_B O
O
O
O
OUT 4 12XTi enclosure
PA_B O
O
O
X
* IN: input signal. A, B: channel A, B. PA: passive enclosure. SB: subwoofer enclosure.
IN A
OUT 2 (IN A)
OUT 1
(IN A)
OUT 3 (IN B)
IN B
OUT 4
(IN B)
!
IMPORTANT
This
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does not represent
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8 CARE AND MAINTENANCE
CARE AND MAINTENANCECARE AND MAINTENANCE
CARE AND MAINTENANCE
8.1 Maintenance information
The L-ACOUSTICS® 12XTi enclosure is a technical product designed for various, intensive indoor and outdoor
sound reinforcement applications. To fulfill such demanding conditions L-ACOUSTICS® has designed the 12XTi
enclosure with high-grade and reliable components:
• Weather-resistant transducers.
• Baltic birch plywood cabinet.
• Polyester powder-coated steel grill covered by a non biodegradable “Airnet” fabric.
• Oxidation-resistant screws and rigging points.
However, in order to ensure product performance and safety, it is essential to frequently inspect the 12XTi cabinet and
its internal components. These checks need to be done on a regular basis depending on the conditions of system use.
The testing procedure consists of three steps as described in section 8.2. If a transducer needs to be repaired or
replaced, apply the corresponding procedure in section 8.3.
8.2 Testing procedure
8.2.1 Check of transducer and enclosure acoustic behavior
Connect a sweep frequency generator to the active input of the LA4 amplified controller. Apply a sweep from 55 Hz to
20 kHz with a maximum voltage of 0.2 volts (-12 dBu, -14 dBV): the sound should remain pure and free of any
unwanted noise. If not, check the mechanical assemblies and, if necessary, contact an L-ACOUSTICS® authorized
representative to repair or replace the damaged components (see also section 8.3).
0.2 volts is a maximum value that can generate very high sound levels at given frequencies.
Use ear protection to set the sound level before testing.
Whenever a transducer is reconnected, wiring polarity should be checked using a phase checking device. If a transducer
is out of phase, invert the cables connected to its electrical sockets. The connecting procedures are given in section 8.3.
8.2.2 Check of mechanical assembly and rigging parts
Inspect the general aspect of assembly and check that screws are locked tight (on loudspeaker, diaphragm, and grill).
Check the quality of contact and locking action of the Speakon® sockets.
8.2.3 Check of external aspect
Remove the dust from the grill with a vacuum device. If needed, repaint the cabinet.
If paint is applied, protect mechanical parts.
Do not apply paint to the front grill fabric as it could fill the fabric holes and deteriorate the acoustic
transparency of the material.
!
IMPORTANT
!
WARNING
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8.3 Transducer service
8.3.1 LF loudspeaker
If damaged, the 12” LF loudspeaker should be removed and repaired or replaced as described below.
Note: The LF and HF transducers are interdependent. Therefore, a recone kit is available if the user wants to repair
the LF loudspeaker only. Alternatively, reconing can be performed by L-ACOUSTICS® (see section 8.4).
LF loudspeaker removing procedure (including HF driver)
1. Put the enclosure on a flat surface with grill facing the user.
2. Remove the grill: remove the 4 Torx® screws (T30) located on both sides, lift up the grill (flat screwdriver).
3. Remove the loudspeaker coaxial assembly: remove the 8 hex screws (5 mm) with split and flat washers,
lift up the loudspeaker (flat screwdriver).
4. Place the loudspeaker coaxial assembly in front of the enclosure with LF cone facing the flat surface.
5. Disconnect the four cables (1 red, 1 black, 1 blue, and 1 white) from the transducer terminal posts: push on
the spring-loaded terminal post, slide the cable out, and release the terminal post.
LF loudspeaker replacing procedure (including HF driver)
1. Place the LF loudspeaker in front of the enclosure with cone facing the flat surface.
2. Connect the four cables to the transducer terminal posts (push on the spring-loaded terminal post, slide the
cable in, and release the terminal post): red = LF+ (LF red terminal post), black = LF- (LF black
terminal post), blue = HF+ (HF red terminal post), white = HF- (HF black terminal post).
3. Install the loudspeaker assembly in the enclosure and screw in the 8 hex screws with split and flat washers:
into each hex screw insert a split washer and then a flat washer (following this sequence) and screw in the
assembly to one of the eight locations (hex 5 mm, 5 N.m/45 in.lbf).
4. Install the grill (logo oriented towards the vents) and screw in the 4 Torx® screws (T30, 3 N.m/27 in.lbf).
8.3.2 HF diaphragm
If damaged, the HF diaphragm should be removed and replaced as described below.
Note: The LF and HF transducers are not separable. Therefore, replacing the full HF driver is only possible by
replacing the complete LF/HF block (as described in section 8.3.1).
HF diaphragm removing procedure
1. Put the enclosure on a flat surface with grill facing the user.
2. Remove the grill: remove the 4 Torx® screws (T30) located on both sides, lift up the grill (flat screwdriver).
3. Remove the loudspeaker coaxial assembly: remove the 8 hex screws (5 mm) with split and flat washers,
lift up the loudspeaker (flat screwdriver).
4. Place the loudspeaker coaxial assembly with LF cone facing the flat surface.
5. Disconnect both cables from the HF driver terminal posts (blue and white cables): push on the spring-loaded
terminal post, slide the cable out, and release the terminal post.
6. Unscrew the 3 hex screws (4 mm) from the back cover, pull the back cover out.
7. Pull the diaphragm out from the magnet.
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HF diaphragm replacing procedure
1. Ensure that the voice coil gap on the driver is free from any particles. If necessary, clean out the gap by using 2-
sided tape.
2. Install the new diaphragm in the gap.
3. Install the back cover on the diaphragm.
4. Screw in the 3 hex screws on the back cover (hex 4 mm, 3 N.m/27 in.lbf). Note: Balance the torques between
screws at every moment while screwing in so as to properly center the diaphragm.
5. Apply a low level LF sine wave (for example: 1 volt at 440 Hz) to ensure that the diaphragm is properly
centered in the gap (the sound should remain pure and free of any unwanted noise). If not, slightly unscrew,
center, screw, and make another test.
6. Connect both cables to both new diaphragm terminal posts: connect the blue cable to the red terminal
post and the white cable to the black terminal post (push on the spring-loaded terminal post, slide the
cable in, and release the terminal post).
7. Install the loudspeaker assembly in the enclosure and screw in the 8 hex screws with split and flat washers:
into each hex screw insert a split washer and then a flat washer (following this sequence) and screw in the
assembly to one of the eight locations (hex 5 mm, 5 N.m/45 in.lbf).
8. Install the grill (logo oriented towards the vents) and screw in the 4 Torx® screws (T30, 3 N.m/27 in.lbf).
8.4 Spare parts and recommended tools
Table 5: Main available spare parts
HS BC31
Diaphragm for 3’’ driver – 8 Ω
HP BC123
12’’ coaxial speaker – 8 Ω (including 3’’ driver)
HS BC123
12’’ recone kit
HR BC123
12’’ recone kit including factory service
SE GRL12XTI
Complete front grill (black)
SE GRL12XTIW
Complete front grill (Pure White RAL 9010®)
Table 6: Recommended tools for service
Torque wrench (N.m or in.lbf)
4 mm hex bit
5 mm hex bit
T30 Torx® bit
4 mm flat screwdriver
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9 SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
Reference 12XTi
Frequency response
Usable bandwidth (-10 dB) 55 Hz - 20 kHz ([12XTP_FR] preset)
Maximum SPL 1 133 dB ([12XTP_FI] preset)
Nominal directivity (-6 dB) 90°, axi-symmetric
Transducers
LF
1x 12’’ weather-resistant transducer mounted in a bass-reflex tuned enclosure
HF
1x 3’’ diaphragm compression driver coaxially-loaded by the 12’’ LF transducer
Filtering Passive 3rd order crossover network
Nominal impedance 8 Ω
Long term RMS power handling capacity
380 W ([12XTP_FI] preset)
Connectors 2 x 4-point Speakon® (wired in parallel)
Dimensions (H x W x D) 540 x 409 x 389 mm / 21.2 x 16.1 x 15.3 inch
Weight 28 kg / 62 lbs
Flying L-ACOUSTICS® ETR12XTi adjustable mounting accessory for wall or
ceiling-mounting (available separately).
Four predrilled inserts with screws for wall or ceiling-mounting using
the OMNIMOUNT® 120.0 SERIES mounting accessories.
Safety eyebolt insert.
Stacking Two fixed angle settings of 30° and 60° with regard to the vertical.
L-ACOUSTICS® EMBi 35 mm/1.4 inch socket for pole mounting
(available separately).
External structure
Material 18 mm Baltic birch plywood.
Standard finish Grey Brown RAL 8019® (12XTi) or Pure White RAL 9010® (12XTiW).
Custom finish RAL code on special order.
Front Polyester powder-coated steel grill, acoustically transparent “Airnet” fabric.
Rigging Polyester powder-coated steel.
1
Peak level measured at 1m under free field conditions using 10 dB crest factor pink noise with specified preset and corresponding EQ settings.
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